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Nata [24]
3 years ago
5

I'm begging you! HELP ME

Mathematics
1 answer:
love history [14]3 years ago
7 0
Okay first off. You want to combine like terms. 

2.75-1.5=1.25j 
2.25+3=5.25

Now you just fit those two answers into the final answer and you have:

1.25j+5.25.
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Now complete the square for 2x^2 + 16x + 3.
o-na [289]

Answer:

To complete the square the equation would be 2(x+4)^2-29

4 0
2 years ago
SOMEONE HELP PLEASE! ASAP!
Luba_88 [7]
When two lines intersect, the angles across from the intersection (the "X") are congruent (equal), and referred to as "vertical angles."
So by the rule of vertical angles are congruent, we can set them equal:
{x}^{2}  - 6x = 1\div2 \: x + 42 \\  {x}^{2}  - 6x - 1 \div 2 \: x = 42 \\  {x}^{2}  - 6.5x = 42
{x}^{2}  - 6.5x - 42 = 0 \\ multiply \: both\: sides \: by \: 2 \: to \: get \\ rid \: of \: the \: decimal \\ 2({x}^{2}  - 6.5x - 42) = 2(0)
2 {x}^{2}  - 13x - 84 = 0
to factor we need the factors of 84:
1×84, 2×42, 3×28, 4×21, 6×14
Now we need one of those factors ×2 ( from the x^2 term) minus the other factor to equal 13 (the middle term)
it turns out that if we use 4×21: 4×2 = 8
and 21-8 = 13. Woohoo! we got it
So now we have:
2 {x}^{2}  - 13x - 84 = 0 \\ (2x - 21)(x + 4) = 0
Now set each factor = 0
1) 2x - 21 = 0 and 2) x + 4 = 0
1) 2x - 21 = 0, 2x = 21, x = 21/2 = 10.5
2) x + 4 = 0, x = -4

Now we plug in each answer to check:
1) x = 10.5
{x}^{2}  - 6x =  {(10.5)}^{2}  - 6(10.5) \\  = 110.25 - 63 = 47.25
1/2x + 42 = 1/2(10.5) + 42 = 5.25 + 42 = 47.25
47.25 = 47.25
BAM SO IT LOOKS LIKE THAT'S IT!!
But let's check 2) first:
2) x = -4
{( - 4)}^{2}  - 6( - 4) = 16 + 24 = 40
1/2x + 42 = 1/2(-4) + 42 = -2 + 42 = 40
40 = 40, so both work!!
But it asks for m<1, and <1 is supplementary because it lies on same line, meaning the sum of both = 189
Therefore m<1 = 180 - 47.25 = 132.75°
OR m<1 = 180 - 40 = 140°


6 0
3 years ago
Is 24/6 a integer, whole number, rational number
guapka [62]
Since 24/6 = 4. So 4 is a integer, rational number, and whole number
7 0
3 years ago
Which function is described by values in the table?
Sveta_85 [38]

One way to approach this problem is to go ahead and find the actual equation in slope-intercept form.


The slope of the line thru (3,6) and (5,4) is m = (6-4) / (3-5), or -2/2, or -1.

Subbing the known values of m, x and y, we get:

4 = -(5) + b. Then b = 9.

The correct equation (representing the data values in the table) is y = -x + 9.


7 0
3 years ago
Easy make sure its detailed 15 points
goblinko [34]

9514 1404 393

Answer:

  • no square roots: -1000, -8
  • one square root: 0
  • two square roots: 8, 64, 1000
  • no cube roots: <none>
  • one cube root: -1000, -8, 0, 8, 64, 1000
  • two cube roots: <none>

Step-by-step explanation:

The attached graph shows the square root relation (red) and the cube root function (blue). The function values are shown for x=0 and x=±8.

You can see that there are 2 square roots for positive numbers, one square root for 0, and 0 square roots for negative numbers. There is exactly 1 cube root for any number.

  • no square roots: -1000, -8
  • one square root: 0
  • two square roots: 8, 64, 1000
  • no cube roots: <none>
  • one cube root: -1000, -8, 0, 8, 64, 1000
  • two cube roots: <none>

_____

<em>Additional comment</em>

We call the square root curve a "relation" because it is <em>not a function</em>. A relation that is a function will have only one y-value for each x-value. For positive x-values, there are two square roots.

4 0
2 years ago
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